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Finding the Fourth Proportional to 316,775.68, 475,193.54 and 89,070.80

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Solution

The fourth proportional to 316,775.68, 475,193.54 and 89,070.80 is: 133,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,775.68 : 475,193.54 = 89,070.80 : x
  2. Step 2: Convert to fraction form
    316,775.68/475,193.54 = 89,070.80/x
  3. Step 3: Cross multiply
    316,775.68x = 475,193.54 × 89,070.80
  4. Step 4: Simplify right side
    316,775.68x = 42,325,868,762.63
  5. Step 5: Solve for x
    x = 42,325,868,762.63/316,775.68
  6. Step 6: Final answer
    x = 133,614.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.